https://doi.org/10.1140/epjb/s10051-022-00403-z
Regular Article-Solid State and Materials
Near-field radiative heat transfer in the three-body system made of nanoporous silicon carbide
Department of Physics, Nanchang University, 330031, Nanchang, China
b
tbwang@ncu.edu.cn
d
lqhua@ncu.edu.cn
Received:
24
May
2022
Accepted:
15
August
2022
Published online:
3
September
2022
Near-field radiative heat transfer between two nanoporous silicon carbide (SiC) can be remarkably enhanced by inserting an intermediate body with finite thickness. The heat flux of the proposed system is enhanced significantly comparing with that of the two-body counterpart, because the intermediate body which behaves like a midrepeater can assist the transfer of the surface phonon polaritons (SPhPs) and hyperbolic phonon polaritons (HPPs). Both the filling fraction of air in the nanoporous SiC and the thickness of the intermediate body play important roles to the radiative heat flux. The heat flux experiences a first increase and then decrease process for the fixed filling fraction as the thickness of the intermediate body increases, and it can reach a maximum value. The maximum heat flux shifts toward larger thickness of intermediate body when the filling fraction increases. The dependence of heat flux on filling fraction is also studied in detail. The results obtained in this work provide an efficient way to further enhance the near-field radiative heat transfer.
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